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Physical Geography-1997 (in Hindi)
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Abhishek Dhiman
B.Sc ( PCM) In starting Cover 6th -12th All NCERT Total Summary 4 year teaching experience

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in this video, in the question where p q r ans s are proportional, if i assume p=1,q=2,r=3,s=6 then checking with the options.. none of them is equal to 1. why?